Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S
The AirTAC SAIJ80X125-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 95 to 125 mm, allowing you to dial back the stroke by up to 30 mm during commissioning without swapping out the unit. Featuring a carbon steel rod and PT tapered port threads, it delivers 3518 N of push force at 0.7 MPa.
This model includes a magnetic piston (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. The extruded aluminum barrel incorporates sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S Is Used
Product Changeovers
Quickly modify the effective stroke from 95 to 125 mm to accommodate different package sizes on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the retract end-position during initial commissioning to perfect the alignment of downstream conveyors and stops.
Variable End Stops
Dial in the exact clamping distance on machining fixtures where raw material thicknesses vary slightly from batch to batch.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust, such as the 3518 N push force at 0.7 MPa, but still needs fine end-position tuning. If your process demands less force, stepping down to a 63 mm bore yields 2182 N at 0.7 MPa, whereas heavier loads might require the 100 mm bore with its 5497 N output. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot provide.
For an exact ISO 15552 replacement, match the 80 mm bore, 125 mm nominal stroke, 30 mm adjustment range, PT port threads, and the -S magnet option. Because the nominal stroke is 125 mm, side-loading is less severe than on longer strokes, but an external guide is still recommended for heavy lateral loads. If you need true load-holding without live air pressure, consider the SAIL or BSAI series instead of relying on the rear stopper.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X125-30S FAQ
At an operating pressure of 0.7 MPa, this 80 mm bore cylinder generates 3518 N of push force and 2268 N of pull force. The maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the effective travel from the 125 mm nominal stroke down to 95 mm. It functions as a mechanical stop to set the end position and does not lock or hold the load without continuous air pressure.
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